Even more than perhaps its potent 80s nostalgia, Stranger Things became a phenomenon thanks to the endlessly charming chemistry of its young cast. The latest chapter of the kids-fightin-evil sci-fi series adds a triple scoop to that formula with what I'd like to affectionately call the Scoops Ahoy Crew. Season 3 finds antagonist-turned-fan-favorite Steve Harrington (Joe Keery) whiling away his summer working alongside Robin—played by Maya Hawke, who is going to be a huge deal after this season, trust—at the Starcourt Mall's ice cream shop, Scoops Ahoy. When strange things …